Electrically-heated shoe-treeing iron



E. N. CHANDLER.

ELECTRICALLY HEATED SHOE TREEING IRON.

APPLICATION FILED NOV. 23| 1915.

Patented Aug. 3, 1920.

lvvv 97%@ 7q @MWC/eww@ EDWIN N. CHANDLER, OF BRAINTREE, MASSACHUSETTS.

ELEernIoALLY-HEATED SHOE-TREEING IRON.

l Application led November 23, 1915. Serial No. 62,968. l

- To all 't0/wm t may concern:

` some,

Vand quickly Be it known that I, EDWIN N. CHADLER, a citizen of the UnitedV States, and resident of Braintree, county .of Norfolk, and State of Massachusetts, have invented an Im`-y provement in Electrically Heated Shoe- Treeing Irons,"of which the following description, in connection with the accompanying drawings, is a speciicatiomlikev letters on the drawings representing like parts. l

My present'inventionis an improved electrically heatedhand tool, particularly useful as a vshoe treeing, burnishing and flinishing tool.

In the manufacture of shoes it is necessary to subject the shoe to the treeing or ironing operation and the electrically heatedh'and treeing machines heretofore employed have been yobjectionable in actual practice.: Such prior devices were heavy, somewhat cumberand `usually supplied the electrical heat through the handles. This method of heat supply, besides thel weight and size 4of thetreeing iron to receivethe electrical heating appliance, caused undue 'fatigue Vand exertionon the part of the operator, the handles partaking very considerably ofthe heat dissipated the operators strength, in addition to the weight and cumbersomeness of the'treeing tool. "Asksuch a hand operatedtreeing tool must necessarily be entirely free from interferenceivwith the heat supply Wires, it was presumed necessary to lead such'wires through the handles to keep same out of the way. However, according to my present invention, I am enabled to have either or both handles on` the treeing iron completely and perfectly insulated from the heat of the treeing tool, and

'also to have such treeing tool made of eX- tremely light weight, including means to concentrate the heat-on the desired surfaces and edges. I also utilize a construction which will enablethe handle or handles to be kept cool by air circulation and which eliminates the necessity of leading the heat supply wires through any handle. In 'my improved electrically heated hand tool I contemplate the utilization of aremovable unitheater or cartridge, and preferably I constructmyy treeing iron to bewmade with the electrical heater carrier leading out of the way ofthe work'and of the handle, both handle and heater being separately removable and also conductinfr the heat supply wires 1n a manner free` rom annoyance or Specification of Letters Patent.

Vcool 'under' applied to to operate on boots and Patented. Auge, 1920.

interferencel with the operator or the treeing lute freedom of movement. By conducting the heat supply wires in a manner other than through the handles I am enabledtov form saidhandlesfree and openy with air circulating means entirely therethrough, thus insuring that the handles `will remain all conditions, while permitting as high a degree of heat as is necessary to be the treeing tool itself. I also prefer to aix the handles detachably tool, permitting ease in shipment, econom `in space, andfinterchangeability offhandles,

which advantageous features are rendered possible `by my invention. An vimportant feature consists in the angular position, with relation to the handle, or handles, ofV that portion of the tool which receives the removable electricalvheatingunit. I lfind that by this construction of vforming the heating socket angularly and, in the case of a treeing iron or similarl tool as shown in the drawings,.ofa separate extension-from the v work engaging portion of the tool, I secure the advantages of having both the heater'V and the heat supplyk wires out ofthe way of the work. l Thisangular positioning of the' heat carrier portion of a heating iron shoes is a distinct novelty and I wish to claim the same' broadly. Also Il believe that the provision,

, in an electrically heated iron to operate lon boots and shoes, whereby the heater receiving portion or earrierof the tool is formed or cast thereonas a separate part, distinguished from boring or recessing a normal portion of the tool, isdistinctly novel. In

treeing irons, such for example, as that shown herein, this provision of a separate heater carrier `is important in enabling the tool'to be made light, strong, and of ordinary size for ease and convenience in handling, not'weakening it `by making a large recess to receive the electrical heater.,

vReferring to the drawings illustrating a shoe treeing iron, j

Figure l is a side view of my improved electrically heated handA iron;

Fig. 2 is a'bottom plan view; A Fig. 3 is a view partly in cross section on the line 3--3 of Fig. l.

The treeing iron l is formed with its to the lower face 2 and edges 3, 4, 5 and G of contours appropriate for shoe 'treeing work, getting into the shank, around the welt crease, across the toe tip, etc. The iron 1 has two upstanding lugs 7 and 8 which are threaded to receive the corresponding `threaded portions oi the handles. These lugs are preferably cast integrally with the treeing iron 1 and remote from (the heated work parts, permitting a preliminary cooling of saidl lugs. Also cast integrally with the treeing iron 1 is the heater carrier 9, cored to receive the heater 10, which heater has its current supply wires 11 and 12 attached to binding posts carried by a removable plate 1B itted onto the outer end of 'lug 9, .said binding posts extending through the plate and constituting the plugs Hand 15 to connect said heater with the detachable conductor 16 to which the `supply wires 17 are'led from any suitable source of power. VThe lug 9 not only carries the heater separately 'from the treeing vtool 1, but also 4holds said 'heater entirely out of the way of the operation of the iron, and contains the additional 'leature of holding thecurrent supply wires also out of the way of the iron and vthe operator. This also enables me to form "the y handles free of the heat supply wires and to enable a construction permitting air circulation vthrough said handles, not otherwise possible.

While :the heating tool vjust described, without 'the handles, may, in emergencies be used to apply heat, as also to consitute an immersion water heater, it is desirable, particularly iny shoe treeing work, to apply a handle orl handles. For many lines of work one handle only is all that is requisite, while in the treeing operation upon most shoes lit is desirable to have two handles to enable suitable 'pressure and manipulation to be applied to A'the tool lby the operator. The treeing iron 'herein shown may be utilized with either one or both handles. Each handle includes a wooden or non-conducting hand gripping portion 18, bored to receive a metal tubing 19, which tube is provided with a plurality oi' apertures 20 and threaded to screw into ythe* correspondingly threaded lugs 7 and S on the tool. The ventilated portion having the holes 20 is of suitable length to 4permit appropriate spacing of the handles 18 from the heated tool 1, insuring air circulation through the tubular Apart and thus. maintaining, the yhandles 18 cool. By having the current supply wires 17 held out of theway. and at a distance above the heating tool and the handles I am enabled to form said handles hollow throughout their entire length, desired, as indicated at 21 in Fig. 1, thus further insuring an airfc'irculation through 'the ventilated portion of the tubing 19. A rivet orscrew 22 through the handles servesrto hold each handle in place on the tubing 19, such provision preferably permitting an adjustment oi the handles relatively with said tubing, greater spacing of the handles from the iron lugs 7 and S permitting greater insulation. It is convenient to lead the current supply wires 17 entirely out of the way of the operator guiding same through a swiveled eye bolt 23 on the end of one of the handles. Preferably the tubing 19 may extend beyond the end of the handle 18 and the eye bolt 23 be swiveled therein, the open end of said tubing permitting air circulation already described. The advantages of the electrically heated hand treeing tool above described will be appreciated by those skilled in the art. Each handle being maintained cool and the extreme llightness and simplicity oi:- the entire construction and saving of weight rendering the tool easily .manipulated without fatigue. 'One handle can be detached when desired Vandl the heating unit quickly fitted or removed through the removal of the collar 13 and binding posts thereon. Also the connector 16 and supply wires may be disconnected at any time. The handles can be removed, the tool shipped and the handles and .heating unit applied properly, correctly, quickly and without Skilled .help in shoe factories, repair shops, or the like. ln the present application I have elected to claim my .invention of an electrically l'ieated tool as applied .to a hand instrument, while 1n m cop'ending application, Ser. No. 62,969,

have elected to claimthe invention as applied to a machine. e

My invention is further'describedand defined in the form of claims as follows:

1. An electrically heated treeing iron, co1nprising fa ktreeing tool, a carrier for an electric heating unit, `said carrier constituting a conductor for the heat supply wires out of the way of the treeing tool and a heat insulatedhandledetachably secured to said tool.

.2. An electrically heated treeing iron,

comprising a treeing tool, a carrier for an electric `heating unit, said carrier constituting a conductor .igor the heat supply wires out of the way of the treeing tool, projecting lugs on said treeing tool anda pairfof de- .tachably secured handles Vfitted to said lugs, eachhandle including anair ventilated portion and a non-magnetic portion.

An electrically heated treeing iron, comprisinga treeing tool, a carrier for an electric heating unit, said carrier constituting a conductor for the, heat supply wires out of the way of the treeing tooland i a heat insulated handle detachably secured `to said tool, in combination 4with aV swiveled gl'lide on the outerend of said handle adapted vto cooperate with the heating unit carrier `to hold the heat. supply wires out of the way of the treeing tool.

4. An electrically heated iron for operating on hoots and shoes, comprising a Work- In testimony whereof, I have signed my engaglng portlon and a heatenoarrylng porname to th1s speolontlon, 111 the presence of tlon extendlng from sind 114011, and a removtwo subscrlblng Wltnesses.

able heating unit secured to a connector in EDVIN NQ CHANDLER. combination with means on said connector Witnesses: n Y to detach-ably hold both heating unit and JAMES R. HoDDER,

connector on the carrying portion. HAROLD J. CLARK. 

